Apparatus for pumping air or gas.



' Patented Mar. l9; l90l. J. B. HILLIARD.

APPARATUS FOR PUMPING AIR 0R GAS. (Apphcahon filed se' t 22, 190m[AWE/I70 ESSE 1 .(No Model.)

"Nrrnn STATES ATENT met.-

JOSEPI'I B. HILLIARD, OF GLASGOW, SCOTLAND.

APPARATUS FOR PUMPING AIR OR GAS.

SPECIFICATION forming part of Iletters Patent No. 670,399, dated March19, 1901'.

Application filed September 22,1900. Serial No. 30,850. (No model.)

To all whom it may concern:

Be it known that I, JosEPH BANKS HIL- LIARD, surgicalrinstrument maker,a subject of the Queen of Great Britain, residing at 20 Renfield street,Glasgow, Scotland, have invented certain new and useful Improvements inApparatus for Pumping Air or Gases, of which the following is aspecification.

This invention relates to apparatus for pumping air or gases; and it hasfor its object to so construct the apparatus that the gas or air beingpumped shall not at any time come in contact with the pump-piston orcylinder. The advantage of the arrangement is that the pump-piston andcylinder are not subject to chemical action due tothe air or gas beingpumped, while at the same time the air or gas is not contaminated bylubricants and such. like;

a pipe 0 leads to a U-shaped reservoir d, and.

this reservoir is connected with a second reservoir e, also of U shape,by means of a pipe connection f. Fromthe top of the reservoir 6 a pipe 9passes to a chamber h, from which a pipe 11 descends and dips into achamber lo and a pipe j descends but does not dip into a chamber Z. Apipe m passes from the top of the chamber k to the one end of a largetubular trough 0, which has an inclined body and upwardly-projectingends. Dipping into the chamber 1 is a pipe n, which connects with a pipep, passing from the opposite end of the trough 0 from that where thepipe m is connected. This pipe 10 leads to a chamber q. Dipping intothis chamber is a pipe 3, leading from a gasometer r.

t t t are automatically-acting valves.

to represents fillingand drain pipes provided with cocks.

l) is a cock on the pipe 8.

w is a filling-pipe with ,cock for the trough 0, while as is adrain-pipe with cock for the same trough.

The dotted lines at y represent the liquid in the trough undergoingtreatment, and, as will be seen, the inclination of the trough is suchthat the liquid is sealed at the point y.

2 represents water in the reservoir 01-, and z alcohol in the reservoir6. The chambers 70, Z, and q are partially filled with water orother'liquid. Oxygen gas is in the gasometer r and the same gas is inthe pipes g, 6,3, n, s, and m and in the chambers 71, is. Z, and q.

At the instroke of the piston of the pump a the column of air in thepipe 0 is caused to move in the direction of the arrow and move thewater in the reservoir 01. This movement is transmitted by the column ofair between the two reservoirs to the alcohol 2 in the reservoir e. Thealcohol in its turn acts upon the oxygen in the pipes g, t, and j andchamber h, with the result that the float-valve tis forced open, whilethe valve t is closed. As a result oxygen gas bubbles through the liquidin the chamber is and passes by the pipe m to the left-hand end of thetrough 0 and slowly passes through the alcoholic liquid y,

a certain amount being absorbed during such passage by the liquid, whilethe remainder collects at the right-hand end of the trough.

The arrows shown in full lines clearly indicate the action, as aforedescribed. At the out or back stroke of the piston of the pump a thecolumns of air, gas, and liquids in the pipes c,f, g, 2', and j and inthe reservoirs d and 6 move in a reverse direction to that previouslydescribed, with the result that the valve 25 is closed by being suckedup against its seat at the bottom of the pipe 1}, while the valves 15and t are opened and oxygen sucked into the chamber h from the gasometerr and the right-hand end of the trough 0. At the next instroke of thepiston of the pump a the oxygen gas thus collected in the chamber h isforced through the alcoholic liquid y, as before. This pumping of theoxygen through the liquid y is continued until the liquid has beensufficiently treated, when it is drained ofi by the pipe or and a freshsupply of liquid to be treated filled in by the pipe 10.

It will be seen that in no case does the oxygen with which the liquid isbeing treated come in contact with the pump c.

Having now fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

1. In combination a pump, two liquid-reservoirs of U shape partiallyfilled with liquid, pipe connections connecting the reservoirs and thepump together, a chamber 7t connected With the reservoirs, admission andemission valves arranged to cooperate with said chamber, substantiallyas set forth.

2. In combination a pump, two liquid-reservoirs of U shape partiallyfilled with liquid, pipe connections connecting the reservoirs and thepump together, a chamber 71 connected with the reservoirs and pipesplacing said chamber h in communication with two other chambers providedwith admission and emission valves substantially as set forth.

In combination a pump, two liquid-reservoirs of U shape partially filledwith liquid, pipe connections connecting the reservoirs and the pumptogether, a chamber it connected With said reservoirs, a pipe leadingfrom said chamber h and dipping into a second chamber partially filledWith liquid, an automatic valve at the bottom of this pipe, anoutlet-pipe leading from this second chamber, a pipe connection leadingfrom the first chamber to a third chamber partially filled with liquid,an air .or gas admission pipe leading from a source of gas or air supplyand dipping into the third chamber, an automatic valve at the bottom ofthis admission-pipe, and means for supplying liquid to the reservoirsand the second and third chambers, substantially as set forth.

4. In combination a pump, a receptacle into which the air or gas has tobe pumped, two liquid-reservoirs of U shape partially filled withliquid, pipe connections connecting the reservoirs and the pumptogether, a chamber h connected with said reservoirs, a pipe lead ingfrom the said chamber and dipping into a second chamber partially filledwith liquid, anautomatic valve at the bottom of this pipe, anoutlet-pipe leading from the second chamber to the said receptacle, apipe connection leading from the chamber h to a third chain berpartially filled with liquid, an air or gas admission pipe leading fromthe source of gas or air supply and dipping into the third chamber, anautomatic valve at the bottom of the admission-pipe, means forregulating the admission of air or gas from the source of supply andmeans for supplying liquid to the reservoirs and the second and thirdchambers, substantially set forth.

Signed at Glasgow, Scotland, this 12th day of September, 1900.

J. B. HILLIARD.

YVitnesses:

WILLIAM GALL, WILLIAM FLEMING.

